自由活塞式发气机是将內燃机的活塞与压縮机的活塞直接联在一起,并使之达到直接作用的一种热力装置。由于它沒有一般內燃机的曲柄連杆机构,活塞行程不受严格的限制,因之具有結构紧凑、装置簡单、用料省、重量比小、热效率高等的优点,特別在与燃气渦輪机联合成为热力装置时,更能发揮很高的經济性能。 Free piston air compressor is the internal combustion engine piston and compressor piston directly together, and to achieve a direct effect of a thermal device. Because it does not have the crank connecting rod mechanism of the general internal combustion engine, the stroke of the piston is not strictly limited. Therefore, it has the advantages of compact structure, simple device, small material consumption, small weight ratio and high thermal efficiency, and especially in combination with a gas turbine Thermal devices, more to play a high economic performance.